package com.sgj.juc;

import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;

/**
 * @Author: Guoji Shen
 * @Date: 2021/8/10 9:46
 */
public class CyclicBarrierDemo {

    // 固定值，7颗龙珠
    private static final Integer NUMBER = 7;

    public static void main(String[] args) {
        // 创建 CyclicBarrier
        CyclicBarrier cyclicBarrier = new CyclicBarrier(NUMBER, () -> {
            System.out.println("*****集齐7颗龙珠了,召唤神龙!!!!");
        });

        // 集齐七颗龙珠的过程
        for (int i = 1; i <= 7; i++) {
            new Thread(() -> {
                try {
                    System.out.println(Thread.currentThread().getName() + " 星龙被收集到了！");
                    // 等待
                    cyclicBarrier.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } catch (BrokenBarrierException e) {
                    e.printStackTrace();
                }
            }, String.valueOf(i)).start();
        }
    }
}